Nasim-Ul-Ghani of Pakistan is the youngest player to pick a 5-wicket haul in test cricket. He was 16 years 303 days old when picked 5/116 against West Indies in 1958.
Enamul Haque of Bangladesh is the youngest to pick a 10-wicket haul in a Test match at the age of 18 years 40 days against Zimbabwe.
At 18 years and 126 days, Rehan Ahmed of England became the youngest bowler in men’s Test history to take a five-wicket haul on debut.
Bert Ironmonger of Australia is the oldest player to pick a 5-wicket haul in a Test innings at 49 years 311 days.
In the same match, Ironmonger picked ten wickets, becoming the oldest player to pick a 10-wicket haul in Test cricket.